Mullion-strip for metallic window-sash



J. G. STODDARD.

MULLION STRIP FOR METALLIC WINDOW SASH. APPLICATION FILED ms. 23. 1918.

1,335,301. Patented Mar, 30, 1920.

2 SHEET SSHEET I.

J. G. STODDARD.

MULLIQN STRIP FOR METALLIC WINDOW SASH.

APPLICATION FILED FEB. 23, 191B- "Patented Mar. 30, 1920,

UNITED STATES PATENT orricn.

JOHN G. STODDARD, or swE'rivAM, VIRGINIA, assrsnon. or rrr rronn ONE- HUNDREDIHS TO ANGUSVW. DAILEY, or PHILADELPHIA, PENNSYLVANIA.

' MULLION-STRIP iron eantime wInnow-sAsH.

Specification of Letters Patent. Patented 1112.1. 30, 1920.

Application filed February 23, 1918. Serial No. 218,813,.

To all whom it may concern Be it known that I, JOHN G. S'roDDARD, a citizen of the United States, and a resident of Swetnam, ounty of Fairfax, State of Virginia, have invented certain Improvements in Mullion-Strips for Metallic Window-Sash, of which the following isa speci-' fication.

My invention relates to certain improvements in a mullion strip used for connecting the adjoining edges of metallic sash units of the type used in factory buildings,where the units are hung side by side from overhead beams and areconnected at their edges by mullion strips which form the sides of the window frame.

One object of my invention is to provide a substantial mullion strip which will withstand wind pressures.

A further object of the invention is to provide means for fastening the mullion strip to the edges of the window sash units without through bolts or other fastenings extending through the strip, and which can be readily and firmly placed in position and which will be held in position against the vibration of the building.

In the accompanying drawings Figure 1, is a perspective view illustrating a portion of two window sash units and a mullion strip connecting the two; Fig. 2, is a face view illustrating the inside construction; Fig. 3, is a sectional view on the line 33, Fig. 2; Fig. 4, is a sectional plan view on the line l r, Fig. 2; Fig. 5, is a perspective view of a portion of the mullion strip; Fig. 6, is a perspective view of one of the wedges; and Figs. 7 and 8, are views of modifications.

1, 1 are the two metallic sash units, which are generally of considerable height and width and usually suspended by hooks from an overhead beam, forming the heading of the window opening, being held in place by bolts. The window opening may contain two or more units arranged side by side and these sash units are spaced a sufficient distance apart to allow for the passage of the web 3 of the mullion strip 45. The mullion strip is T-shaped in cross section and may be made of the ordinary commercial T-bars.

Each of the sash frames 1 has flat extensions 2 at each side and the portions 5 of the mullien strip overlap these portions Of th draws a portion 5 of the mullion strip slots 6 and bear against the portions 2 of V the sash. These wedges are placed in position, as shown by dotted lines in Fig. 3, and.

driven so that the edge which bears against the sash is below the point where it bears. wedge is against the web, so that when the in place it willnot have a tendency to be come loose. The wedge, as it is driven, in close contact with the extensions 2 of the window sash, making a tight joint. The wedges have an extended bearing on the extensions 2 of the sash, as clearly shown in Fig. 4, and are preferably notched at S- so as to be centered on the web of the mullion strip, although these notches are not absolutely necessary. 7

In Fig. 7, I have shown a modification of the wedge, which is made in two sections 7 and 7. Both of these sections are tapered and one of the wedges is driven transversely to the vertical line of the mullion strip so as to draw the strip tightly against the frame. 7

In Fig. 9, I have shown a bar 7 shaped somewhat like the wedge and having set screws 10 which, when turned, cause the mullion strip to be drawn tightly against the window sash.

A mullion strip made in accordance with my invention has a neat appearance from the outside. There are no through openings in the strip for bolts, or other fastenings, through which rain water, or air, can pass, consequently, there is no liability of the attaching means becoming rusty. The fastening devices can be held against the vibrations of the building and can be easily detached when it is necessary to remove the mullion strip and the sash unit.

1. The combination of two adjoining sash units; a T-shaped mullion strip the lateral members of the strip bearing against the outer surface of the sash units, the web of the mullion extending through the space between the sash units; and means located be the units; and a wedge located between the web and the inner surface of the sash units.

3. The combination of two sash units;

T-shaped mullion strip bearing against the outer surface of said units, the web of the mullion strip extending between the units and slotted; and a fastening device located in the slot and bearing against the inside of the sash, holding the mullion strip to the sash.

4:. The combination of two sash units arranged edge to edge; a T-shaped mullion strip bearing against the outside of the sash nnits, the web of the mullion strip extendlng beyond the units and slotted; and a wedge extending through theslot and bearing against the sash and arranged to hold the mullion strip firmly to the sash units.

5. The combination of two sash units arranged edge to edge, each sash unit having an extension; a mullion strip bearing against the extensions of the sash units, the web of the mullion strip extending through the space between the adjoining extensions of the sash units, the web having a series of slots therein, thelower wall of each slot being arranged at an an 1e; and a wedge adapted to each slot an arranged to bear against the inner surface of the extensions 0 the sash units, the said wedges being driven so that the bearing edge of the sash will be below a horizontal line in order to prevent the wedges working loose due to the vibration of the buildin 6. The combination 0 two sash units arranged edge to edge; a T-shaped mullion strip bearing against the outer surface of the sash units and closing the joint between the said sash units, the web of the mullion strip extending between the sash units,thc web having a series of tapered slots therein; and a wedge mounted in each slot, each wedge being notched at the center so that it will be retained in the central position in respect to the web and arranged to bear against the inside of the sash units when driven into place.

7. The combination of two metallic sash units arranged edge to edge with a mullion strip having imperforate lateral members overlapping the outside edges of the sash units and having a member extending between the units and means engaging the said member and the inner portions of the sash units for drawing the mullion strips tight against the sash units.

In witness whereof I afiix my signature.

JOHN G. STODDARD. 

